Dot Plots (STAAR Review)

How many data points are in this dot plot?

• 4

• 5

• 6

• 7

Answer explanation

List the data points.

• 4, 5, 6, 7

• 4, 5, 5, 6, 7

• 1, 1, 1, 2

Answer explanation

Don't forget to count the repeats.

What is the median of the data?

(Hint: List the data from least to greatest, then determine the number in the middle.)

• 1

• 2

• 4

• 5

Answer explanation

What is the mode?

(Hint: List the data points, then name the data point that was repeated the most.)

• 1

• 2

• 4

• 5

Answer explanation

What is the range?

(Hint: Range = High - Low)

• 1

• 4

• 7

• 3

Answer explanation

What is the mean?

(Hint: Add up the data points, then divide by the total number of data points you added up!)

• 4.4

• 5.4

• 6.4

• 7.4

Answer explanation

• A total of 10 people responded to the survey.

• There were 8 people who took 2 or fewer trips to a movie theater.

• All the people who responded to the survey took at least 1 trip to a movie theater.

• Half the people who responded to the survey took 5 or more trips to a movie theater.

• The number of athletes with a vertical jump height of 33.5 inches is less than the number of athletes with a vertical jump height of 37.5 inches and 38 inches.

• The number of athletes with a vertical jump height of 34 inches is 1/4 of the total number of athletes.

• The least number of athletes had a vertical jump height of 33 inches.

• The number of athletes with a vertical jump height of 33.5 inches is 1/5 of the total number of athletes.

Answer explanation